High Pollen in McKinney, TX
High today, mostly tree pollen.
Last updated September 30, 2026
Driving it today
Forecast
About pollen in McKinney
Tree pollen is dominating in McKinney today, reaching a very high level that is likely to cause noticeable symptoms even for people who are only mildly sensitive. Weed pollen is also elevated and worth paying attention to, while grass is running at a more moderate, manageable level. Altogether, it adds up to a tough day for allergy sufferers, particularly anyone bothered by both trees and weeds at once. Looking ahead, tree and weed levels should ease over the next couple of days before dropping sharply, with grass following a similar pattern. Expect a brief lull before all three creep back up toward the end of the stretch. This burst of tree pollen is a bit unusual for early fall, since trees typically peak in spring, but species like cedar and elm can still stir up activity later in the year. Meanwhile, the ongoing weed presence fits the season well, as ragweed and similar plants are typically most active from late summer into fall.
What to do today
- Avoid mowing the lawn and raking leaves.
- When driving the car, close your windows and turn the air conditioning system to recirculation mode.
- Keep your windows closed and turn on your air purifier or air conditioning.
- Consider staying indoors during the peak pollen hours (morning and early afternoon).
Common questions
- What is the pollen count in McKinney, TX today?
- McKinney, TX is at a high 4 out of 5 on the Universal Pollen Index today, driven mainly by tree pollen. Over the next five days it ranges from 0 to 4 of 5.
- Is tree pollen high in McKinney, TX right now?
- Tree pollen is high today at 4 of 5, and it's in season now. Many allergy sufferers will have symptoms.
- What plants are causing allergies in McKinney, TX?
- The main sources right now are Elm, Grasses, and Ragweed. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.